Question
Mathematics Question on Relations and functions
The total number of functions, f:1,2,3,4→1,2,3,4,5,6 such that f(1)+f(2)=f(3), is equal to :
A
60
B
90
C
108
D
126
Answer
90
Explanation
Solution
The correct option therefore is (B): 90
The total number of functions, f:1,2,3,4→1,2,3,4,5,6 such that f(1)+f(2)=f(3), is equal to :
60
90
108
126
90
The correct option therefore is (B): 90